/* ********************************************************************** **
** Copyright notice **
** **
** (c) 2005-2009 RSSOwl Development Team **
** http://www.rssowl.org/ **
** **
** All rights reserved **
** **
** This program and the accompanying materials are made available under **
** the terms of the Eclipse Public License v1.0 which accompanies this **
** distribution, and is available at: **
** http://www.rssowl.org/legal/epl-v10.html **
** **
** A copy is found in the file epl-v10.html and important notices to the **
** license from the team is found in the textfile LICENSE.txt distributed **
** in this package. **
** **
** This copyright notice MUST APPEAR in all copies of the file! **
** **
** Contributors: **
** RSSOwl Development Team - initial API and implementation **
** **
** ********************************************************************** */
package org.rssowl.ui.internal.dialogs.cleanup;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.CheckboxTreeViewer;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.rssowl.core.persist.IBookMark;
import org.rssowl.core.persist.IFolder;
import org.rssowl.core.persist.IMark;
import org.rssowl.core.util.CoreUtils;
import org.rssowl.ui.internal.Application;
import org.rssowl.ui.internal.OwlUI;
import org.rssowl.ui.internal.dialogs.PreviewFeedDialog;
import org.rssowl.ui.internal.util.FolderChildCheckboxTree;
import org.rssowl.ui.internal.util.LayoutUtils;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* @author bpasero
*/
public class FeedSelectionPage extends WizardPage {
private FolderChildCheckboxTree fFolderChildTree;
private CheckboxTreeViewer fViewer;
private Button fSelectAll;
private Button fDeselectAll;
private Button fDisplayFeedButton;
/**
* @param pageName
*/
protected FeedSelectionPage(String pageName) {
super(pageName, pageName, OwlUI.getImageDescriptor("icons/wizban/cleanup_wiz.gif")); //$NON-NLS-1$
setMessage(Messages.FeedSelectionPage_CHOOSE_BOOKMARKS);
}
/* Returns all selected Bookmarks */
Set<IBookMark> getSelection() {
Set<IBookMark> selection = new HashSet<IBookMark>();
Object[] checkedElements = fViewer.getCheckedElements();
for (Object checkedElement : checkedElements) {
/* Folder */
if (checkedElement instanceof IFolder)
addAll(selection, (IFolder) checkedElement);
/* Bookmark */
else if (checkedElement instanceof IBookMark)
selection.add((IBookMark) checkedElement);
}
return selection;
}
private void addAll(Set<IBookMark> bookmarks, IFolder folder) {
/* Child Folders */
List<IFolder> childFolders = folder.getFolders();
for (IFolder childFolder : childFolders) {
addAll(bookmarks, childFolder);
}
/* Bookmarks */
List<IMark> marks = folder.getMarks();
for (IMark mark : marks) {
if (mark instanceof IBookMark)
bookmarks.add((IBookMark) mark);
}
}
/*
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
*/
public void createControl(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
container.setLayout(new GridLayout(1, false));
/* Viewer for Folder Child Selection */
fFolderChildTree = new FolderChildCheckboxTree(container, true);
fViewer = fFolderChildTree.getViewer();
/* Filter out any non Bookmarks and empty folders */
fViewer.addFilter(new ViewerFilter() {
@Override
public boolean select(Viewer viewer, Object parentElement, Object element) {
if (element instanceof IFolder)
return hasBookMarks((IFolder) element);
return element instanceof IBookMark;
}
});
/* Update Display Button on Selection */
fViewer.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
fDisplayFeedButton.setEnabled(((IStructuredSelection) event.getSelection()).getFirstElement() instanceof IBookMark);
}
});
/* Show Feed on Doubleclick */
fViewer.addDoubleClickListener(new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
showFeeds((IStructuredSelection) event.getSelection());
}
});
/* Set Input */
fFolderChildTree.getViewer().setInput(CoreUtils.loadRootFolders());
fFolderChildTree.setAllChecked(true);
/* Select All / Deselect All */
Composite buttonContainer = new Composite(container, SWT.NONE);
buttonContainer.setLayout(LayoutUtils.createGridLayout(4, 0, 0));
buttonContainer.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));
fSelectAll = new Button(buttonContainer, SWT.PUSH);
fSelectAll.setText(Messages.FeedSelectionPage_SELECT_ALL);
Dialog.applyDialogFont(fSelectAll);
setButtonLayoutData(fSelectAll);
fSelectAll.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
fFolderChildTree.setAllChecked(true);
}
});
fDeselectAll = new Button(buttonContainer, SWT.PUSH);
fDeselectAll.setText(Messages.FeedSelectionPage_DESELECT_ALL);
Dialog.applyDialogFont(fDeselectAll);
setButtonLayoutData(fDeselectAll);
fDeselectAll.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
fFolderChildTree.setAllChecked(false);
}
});
if (!Application.IS_MAC) {
Label sep = new Label(buttonContainer, SWT.SEPARATOR | SWT.VERTICAL);
sep.setLayoutData(new GridData(SWT.BEGINNING, SWT.FILL, false, false));
((GridData) sep.getLayoutData()).heightHint = 20;
}
fDisplayFeedButton = new Button(buttonContainer, SWT.PUSH);
fDisplayFeedButton.setText(Messages.FeedSelectionPage_DISPLAY);
fDisplayFeedButton.setEnabled(false);
fDisplayFeedButton.setToolTipText(Messages.FeedSelectionPage_DISPLAY_FEEDS);
Dialog.applyDialogFont(fDisplayFeedButton);
setButtonLayoutData(fDisplayFeedButton);
fDisplayFeedButton.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
showFeeds((IStructuredSelection) fViewer.getSelection());
}
});
Dialog.applyDialogFont(container);
setControl(container);
}
private void showFeeds(IStructuredSelection selection) {
if (!selection.isEmpty()) {
Object[] elements = selection.toArray();
int offset = 0;
for (Object element : elements) {
if (element instanceof IBookMark) {
IBookMark bookmark = (IBookMark) element;
PreviewFeedDialog dialog = new PreviewFeedDialog(getShell(), bookmark, bookmark.getFeedLinkReference());
dialog.setBlockOnOpen(false);
dialog.open();
if (offset != 0) {
Point location = dialog.getShell().getLocation();
dialog.getShell().setLocation(location.x + offset, location.y + offset);
}
offset += 20;
}
}
}
}
private boolean hasBookMarks(IFolder folder) {
List<IMark> marks = folder.getMarks();
for (IMark mark : marks) {
if (mark instanceof IBookMark)
return true;
}
List<IFolder> childFolders = folder.getFolders();
for (IFolder childFolder : childFolders) {
if (hasBookMarks(childFolder))
return true;
}
return false;
}
}